52809047 has 4 divisors (see below), whose sum is σ = 52978080. Its totient is φ = 52640016.

The previous prime is 52809023. The next prime is 52809049. The reversal of 52809047 is 74090825.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52809047 - 2⁶ = 52808983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52808998 and 52809016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52809049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84047 + ... + 84672.

It is an arithmetic number, because the mean of its divisors is an integer number (13244520).

Almost surely, 2^52809047 is an apocalyptic number.

52809047 is a deficient number, since it is larger than the sum of its proper divisors (169033).

52809047 is a wasteful number, since it uses less digits than its factorization.

52809047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169032.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 52809047 is about 7266.9833493686. The cubic root of 52809047 is about 375.1769168177.

The spelling of 52809047 in words is "fifty-two million, eight hundred nine thousand, forty-seven".